<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>文本阴影</title>
    <style>
        body{
            background-color: #000; 
        }
        h1{
            /*text-shadow: -2px -3px 5px yellow;*/
            text-shadow: 5px 5px 3px yellow;
        }
    </style>
</head>
<body>
    <h1>这是文本阴影测试</h1>
</body>
</html>